One day, in rehearsal, I fell and twisted my left knee. I knew instantly ... to trim away the damaged cartilage and remove any other bits of debris that might be floating around.

Chicago Bulls guard Lonzo Ball got to meet the family of the man who donated the knee cartilage he received in a transplant two years ago ...

Amin and colleagues, therefore, investigated the effects of smoking on cartilage loss and knee pain in men with knee osteoarthritis (OA). Their 30 month study evaluated 159 men (mean age 68 years ...